Craftsman 919.167462 Owner's manual

Owner's Manual

iCRHFTSMRN'i

Permanently Lubricated

Single Stage

Side Stack

AIR COMPRESSOR

Model No.

919.167462

• Safety Guidelines

• Assembly

• Operation

• Maintenance

• Service and Adjustments

• Troubleshooting

• Repair Parts

CAUTION: Read the Safety Guidelines

and All Instructions Carefully Before

Operating.

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

Visit our Craftsman website: www.sears.com/craftsman

D30050 Rev0 8/26/03

WARRANTY ................................................ 2

SPECIFICATION CHART ..................................... 3

SAFETY GUIDELINES-DEFINITIONS ........................... 3

IMPORTANT SAFETY INSTRUCTIONS ........................ 3-8

GLOSSARY ................................................ 9

ACCESSORIES ............................................. 9

DUTY CYCLE .............................................. 9

ASSEMBLY ............................................... 10

INSTALLATION .......................................... 10-11

OPERATION ............................................ 12-14

MAINTENANCE ......................................... 15-16

SERVICE AND ADJUSTMENTS ............................... 17

STORAGE ................................................ 18

TROUBLESHOOTING GUIDE .............................. 19-21

REPAIR PARTS ......................................... 22-25

ESPAI_IOL .............................................. 26-48

NOTES/NOTAS ............................................ 46

REPAIR PROTECTION AGREEMENTS ......................... 47

HOW TO ORDER REPAIR PARTS ...................... Back Cover

ltl__1;| ;[_I_ hi"

FULL ONE YEAR WARRANTY AIR COMPRESSOR

If this CRAFTSMAN Air Compressor fails due to a defect in material or

workmanship within one year from the date of purchase, Sears will at its

option repair or replace it free of charge. Contact your nearest Sears Service

Center (1-800-4-MY-HOME ®)to arrange for repair, or return the Air

Compressor to the place of purchase for replacement.

If this Air Compressor is used for commercial or rental purposes, this warrant

applies for only ninety days from the date of purchase.

This warranty gives you specific legal rights and you may have other rights

which vary from state to state.

Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179

D30050 2* ENG

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Model No. 919.167462

Max. Developed HP 3

Running HP 1.8

Bore 2.375"

Stroke 1.35"

Voltage-Single Phase 120V

Minimum Branch Circuit Requirement 15 amps

Fuse Type Time Delay

Air Tank Capacity - Gallons 4

Approximate Cut-in Pressure 120

Approximate Cut-out Pressure 150

SCFM@ 40 psig 7.9

SCFM@ 90 psig 5.5

Refer to Glossary for abbreviations.

[-.'Y.,I;I_ I_'d[€-lJ]Im]=1IqI_I::_'_.,Im]::1;II_1i II[e_]_._

This manual contains information that iS important for you to know and understand. This information

relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you

recognize this information_ we use the Symbols below. Please read the manual and pay attention to

these sections.

_lndicates an

imminently hazardous

situation which, if not avoided, will

result in death or serious injury.

_lndicates a potentially

hazardous situation

which, if not avoided, could result in

death or serious injury.

_[_1'_lndicates a potentially

hazardous situation

which, if not avoided, _ result in

minor or moderate injury.

_"_Used without the

safety alert symbol

indicates a potentially hazardous

situation which, if not avoided, may

result in oroDertv damaae.

IhSl_o]-']nq.,1+hd_"Y.,_I_,_'4_[IP,[.._l_o]nj[o _]P,[..+

SAVE THESE INSTRUCTIONS

iMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULTIN

SERIOUS INJURY AND PROPERTY DAMAGE. READ AND UNDERSTAND ALL

WARNINGSAND OPERATINGINSTRUCTIONSBEFOREUSING THIS EQUIPMENT.

Some dust created by power sanding, sawing, grinding, drilling, and other

construction activities contains chemicals known (to the State of California) to

cause cancer, birth defects or other reproductive harm. Some example of these chemicals are:

• lead from lead-based paints

• crystalline silica from bricks and cement and other masonry products

• arsenic and chromium from chemically*treated lumber

Your risk from these exposures varies, depending on how often you do this type of work. To reduce

your exposure to these chemicals: work in a well ventilated area, and work with approved safety

equipment, always wear MSHA/NIOSH approved, properly fitting face mask or respirator when using

such tools.

When using air tools, basic safety precautions should always be followed to reduce the risk of of

personat injury.

3* ENG D30050

II_ I_o] ;111P'.'q+IInl[,.'9'.,__1_ &'i __JL_[,._)III,_]LI_+']IIT[_o_+]L_,[,._

Save these instructions

Improper operation or maintenance of this product could result in serious injury and

property damage. Read and understand all warnings and operation instructions before

using this equipment,

,l;1"l'J "-In

WARNING: Risk of explosion or fire

What Could Happen How To Prevent It

It is normal for electrical contacts Always operate the compressor in a well

within the motor and pressure switch to ventilated area free of combustible

spark, materials, gasoline, or solvent vapors.

If electrical sparks from compressor If spraying flammable materials, locate

come into contact with flammable compressor at least 20 feet away from

vapors, they may ignite, causing fire or spray area. An additional length of hose

explosion, may be required,

Store flammable materials in a secure

location away from compressor.

Restricting any of the compressor

ventilation openings will cause serious

overheating and could cause fire,

Unattended operation of this product

could result in personal injury or

property damage. To reduce the risk of

fire, do not allow the compressor to

operate unattended.

Never place objects against or on top

of compressor. Operate compressor in

an open area at least 12 inches away

from any wall or obstruction that would

restrict the flow of fresh air to the

ventilation openings.

Operate compressor in a clean, dry wall

ventilated area. Do not operate unit

indoors or in any confined area.

Always remain in attendance with the

)roduct when it is operating.

Always disconnect electrical power by

moving pressure switch lever to the off

}osition and drain tank daily or after

each use.

D30050 4* ENG

WARNING: Risk of Bursting

Air Tank: The following conditions could lead to a weakening of the tank, and result

in a violent tank explosion and could cause property damage or serious injury,

What Could Haopen How To Prevent It

Failure to properly drain condensed Drain tank daily or after each use. If

water from tank, causing rust and tank develops a leak, replace it

thinning of the steel tank. immediately with a new tank or replace

the entire compressor.

Modifications or attempted repairs to Never drill into, weld, or make any

the tank. modifications to the tank or its

Unauthorized modifications to the attachments.

unloader valve, safety valve, or any

other components which control tank

pressure.

Excessive vibration can weaken the The tank is designed to withstand specific

air tank and cause rupture or operating pressures. Never make

explosion adjustments or parts substitutions to

alter the factory set operating

pressures=

ATTACHMENTS & ACCESSORIES:

Exceeding the pressure rating of air

tools, spray guns, air operated

accessories, tires, and other inflatables

can cause them to explode or fly apart,

and could result in serious injury.

For essential control of air pressure, you

must install a pressure regulator and

pressure gauge to the air outlet (if not

equipped) of your compressor. Follow the

equipment manufacturers

recommendation and never exceed the

maximum allowable pressure rating of

attachments. Never use compressor to

inflate small low pressure objects such

as children's toys, footballs,

basketballs, etc.

WARNING: Risk from Flying Objects

What Could Happen How To Prevent It

The compressed air stream can cause

soft tissue damage to exposed skin

and can propel dirt, chips, loose

particles, and small objects at high

speed, resulting in property damage or

personal injury.

Always wear ANSI Z87.1 approved safety

glasses with side shields when using the

compressor.

Never point any nozzle or sprayer

toward any part of the body or at other

people or animals.

Always turn the compressor off and

bleed pressure from the air hose and tank

before attempting maintenance, attaching

to0_s Oi" accessories,

5* ENG D30050

:f:1"4_;ll

WARNING: Risk of Electrical Shock _J

What Could Happen

Your air compressor is powered by

electricity. Like any other electrically

powered device, If it is not used

properly it may cause electric shock.

Repairs attempted by unqualified

personnel can result in serious injury

or death by electrocution.

Electrical Grounding: Failure to provide

adequate grounding to this product

could result in serious injury or death

from electrocution.

See grounding instructions,

How To Prevent It

Never operate the compressor outdoors

when it is raining or in wet conditions.

Never operate compressor with

protective covers removed or damaged.

Any electrical wiring or repairs required

on this product should be performed by

authorized service center personnel in

accordance with national and local

electrical codes,

Make certain that the electrical circuit to

which the compressor is connected

provides proper electrical grounding,

correct voltage and adequate fuse

protection.

WARNING: Risk of Breathing

What Could Happen How To Prevent It

The compressed air directly from your

compressor is not safe for breathing.

The air stream may contain carbon

monoxide, toxic vapors, or solid

particles from the tank. Breathing these

contaminants can cause serious injury

or death.

Sprayed materials such as paint, paint

solvents, paint remover, insecticides,

weed killers, may contain harmful

vapors and poisons,

Air obtained directly from the compressor

should never be used to supply air for

human consumption, in order to use air

produced by this compressor for

breathing, suitable filters and in-line

safety equipment must be properly

installed. In-line filters and safety

equipment used in conjunction with the

compressor must be capable of treating

air to all applicable local and federal

codes prior to human consumption.

Work in an area with good cross

ventilation. Read and follow the safety

instructions provided on the label or

safety data sheets for the materials you

are spraying. Use a NtOSH/MSHA

approved respirator designed for use with

your specific application.

D30050 6* ENG

WARNING: Risk of Burns

What Could Happen

Touching exposed metal such as the

compressor head or outlet tubes, can

result in serious burns.

How To Prevent It

Never touch any exposed metal parts

on compressor during or immediately

after operation. Compressor will remain

hot for several minutes after operation.

Do not reach around protective shrouds

or attempt maintenance until unit has

been allowed to cool.

;f.,v#.,1"1=

WARNING: Risk from Moving Parts _)

What Could Happen How To Prevent It

Moving parts such as the pulley, flywheel, Never operate the compressor with

and belt can cause serious injury if they guards or covers which are damaged or

come into contact with you or your removed.

clothing.

Attempting to operate compressor with Any repairs required on this product

damaged or missing parts or attempting should be performed by authorized

to repair compressor with protective service center personnel.

shrouds removed can expose you to

moving parts and can result in serious

injury,

;f.,VN.,I"1=

WARNING: Risk of Falling

What Could Happen

A portable compressor can fall from a

table, workbench, or roof causing

damage to the compressor and could

result in serious injury or death to the

operator,

How To Prevent It

Always operate compressor in a stable

secure position to prevent accidental

movement of the unit. Never operate

compressor on e roof or other elevated

position. Use additional air hose to

reach high locations.

7÷ ENG D30050

WARNING: Risk of Unsafe Operation A

What Could Happen How To Prevent It

Unsafe operation of your air compressor

could lead to serious injury or death to

you or others.

Review and understand all instructions

and warnings in this manual

Become familiar with the operation and

controls of the air compressor.

Keep operating area clear of all persons,

pets, and obstacles.

Keep children away from the air

compressor at all times.

Do not operate the product when

fatigued or under the influence of

alcohol or drugs. Stay alert at all times.

Never defeat the safety features of this

product.

Equip area of operation with a fire

extinguisher.

DO not operate machine with missing,

broken, or unauthorized parts.

SAVE THESE INSTRUCTIONS

D30050 8* ENG

Become familiar with these terms

before operating the unit.

CFM: Cubic feet per minute.

SCFM: Standard cubic feet per

minute; a unit of measure of air

delivery.

PSlG: Pounds per square inch

gauge; a unit of measure of pressure.

Code Certification: Products that

bear one or more of the following

marks: UL, CUL, ETL, CETL, have

been evaluated by OSHA certified

independent safety laboratories and

meet the applicable Underwriters

Laboratories Standards for Safety.

Cut-In Pressure: While the motor is

off, air tank pressure drops as you

continue to use your accessory.

When the tank pressure drops to a

certain low level the motor will restart

automatically. The low pressure at

which the motor automatically

restarts is called "cut-in" pressure.

Cut-Out Pressure: When an air

compressor is turned on and begins

to run, air pressure in the air tank

begins to build. It builds to a certain

high pressure before the motor

automatically shuts off - protecting

your air tank from pressure higher

than its capacity. The high pressure

at which the motor shuts off is called

"cut-out" pressure.

Branch Circuit: Circuit carrying

electricity from electrical panel to

outlet.

This unit is capable of powering the following Accessories. The accessories are

available through the current Power and Hand Tool Catalog or full-line Sears

stores.

Accessories • Oil Fog Lubricators

', In Line Filter • Air Hose:l/4", 3/8" or 1/2" I.D. in

• Tire Air Chuck various lengths

• Quick Connector Sets (various Refer to the selection chart located

sizes) on the unit to select the tools this unit

• Air Pressure Regulators is capable of powering.

ml_Tujnj_[e,_ q=1

This air compressor pump is capable

of running continuously. However, to

prolong the life of your air

compressor, it is recommended that a

50%-75% average duty cycle be

maintained; that is, the air

compressor pump should not run

more than 30-45 minutes in any given

hour.

9- ENG D30050

_'-_.__h_I_]_'d

Unpacking

1. Remove unit from carton and

discard all packaging.

HOW TO SET UP YOUR

UNIT

Location of the Air Compressor

Locate the air compressor in a clean,

dry and well ventilated area. The air

compressor should be located at

least 12" away from the wall or other

obstructions that will interfere with

the flow of air. The air compressor

pump and shroud are designed to

allow for proper cooling. The

ventilation openings on the

compressor are necessary to

maintain proper operating

temperature. Do not place rags or

other containers on or near these

openings.

GROUNDING INSTRUCTIONS

_RISK OF

ELECTRICAL

SHOCK. In the event of a short

circuit, grounding reduces the risk

of shock by providing an escape

wire for the electric current. This

air compressor must be properly

grounded.

The portable air compressor is

equipped with a cord having a

grounding wire with an appropriate

grounding plug (see following

illustrations). The plug must be used

with an outlet that has been installed

and grounded in accordance with all

local codes and ordinances.

1.

The cord set and plug with this

unit contains a grounding pin.

This plug MUST be used with a

grounded outlet.

IMPORTANT: The outlet being used

must be installed and grounded in

accordance with all local codes and

ordinances.

2.

Make sure the outlet being used

has the same configuration as

the grounded plug. DO NOT

USE AN ADAPTER. See

illustration.

_ _luj _ Grounded

_ _Outlets

Grou_g Pin

3. inspect the plug and cord before

each use. Do not use if there are

signs of damage.

4. If these grounding instructions

are not completely understood,

or if in doubt as to whether the

compressor is properly

grounded, have the installation

checked by a qualified

electrician.

;%°.',CAL

SHOCK. IMPROPER GROUNDING

CAN RESULT IN ELECTRICAL

SHOCK.

Do not modify the plug provided. If

it does not fit the available outlet, a

correct outlet should be installed

by a qualified electrician.

Repairs to the cord set or plug

MUST be made by a qualified

electrician.

D30050 10_ ENG

Extension Cords

Using extension cords is not

recommended. The use of extension

cords will cause voltage to drop

resulting in power loss to the motor

and overheating.

Instead of using an extension cord,

increase the working reach of the air

hose by attaching another length of

hose to its end. Attach additional

lengths of hose as needed.

If an extension cord must be used,

be sure it is:

a 3-wire extension cord that has

a 3-blade grounding plug, and a

3-slot receptacle that will accept

the plug on the product

* in good condition

no longer than 50 feet

12 gauge (AWG) or larger. (Wire

size increases as gauge number

decreases. 10 AWG and 8 AWG

may also be used. DO NOT

USE 14 OR 16 AWG.)

Voltage and Circuit Protection

Refer to the specification chart for the

voltage and minimum branch circuit

requirements.

Risk of Unsafe

Operation. Certain

air compressors can be operated

on a 15 amp circuit if the following

conditions are met.

1. Voltage supply to circuit must

comply with the National

Electrical Code.

2. Circuit is not used to supply any

other electrical needs.

3. Extension cords comply with

specifications.

4,

Circuit is equipped with a 15

amp circuit breaker or 15 amp

time delay fuse. NOTE: If

compressor is connected to a

circuit protected by fuses, use

only time delay fuses. Time delay

fuses should be marked "D" in

Canada and "T" in the US.

If any of the above conditions cannot

be met, or if operation of the

compressor repeatedly causes

interruption of the power, it may be

necessary to operate it from a 20

amp circuit. It is not necessary to

change the cord set.

11_ ENG D30050

Know Your Air Compressor

READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING

YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with

the location of various controls and adjustments. Save this manual for future

reference.

Air

Compressor

Pump

Outlet

Gauge

Description of Operation

Become familiar with these controls

before operating the unit.

On/Auto/Off Switch: Turn this switch

ON to provide automatic power to the

pressure switch and OFF to remove

power at the end of each use.

Pressure Switch: The pressure

switch automatically starts the motor

when the air tank pressure drops

below the factory set "cut-in"

pressure. It stops the motor when the

air tank pressure reaches the factory

set "cut-out" pressure.

Safety Valve (not shown): If the

pressure switch does not shut off the

air compressor at its "cut-out"

pressure setting, the safety valve will

protect against high pressure by

"popping out" at its factory set

pressure (slightly higher than the

pressure switch "cut-out" setting).

Outlet Pressure Gauge: The outlet

pressure gauge indicates the air

pressure available at the outlet side

Universal

Quick

Connect

Regulator Bodies

of the regulator. This pressure ts

controlled by the regulator and is

always less than or equal to the tank

pressure.

Tank Pressure Gauge: The tank

pressure gauge indicates the reserve

air pressure in the tank.

Regulator: Controls the air pressure

shown on the outlet pressure gauge.

Pull the knob out and turn clockwise

to increase pressure and

counterclockwise to decrease

pressure. When the desired pressure

is reached push knob in to lock in

place.

Universal Quick-Connect Body:

The universal quick-connect body

accepts the three most popular styles

of quick-connect plugs- Industrial,

automotive (Tru-flate), and ARC. One

hand push-to-connect operation

makes connections simple and easy.

The two quick connect bodies allow

the use of two tools at the same time.

D30050 12- ENG

Cooling System (not shown): This

compressor contains an advanced

design cooling system. At the heart of

this cooling system is an engineered

fan. It is perfectly normal for this fan

to blow air through the vent holes in

large amounts. You know that the

cooling system is working when air is

being expelled.

Air Compressor Pump:

Compresses air into the air tank.

Working air is not available until the

compressor has raised the air tank

pressure above that required at the

air outlet.

Drain Valve: The drain valve is

located at the base of the air tank

and is used to drain condensation at

the end of each use.

Check

Valve

Drain

Valve

Check Valve: When the air

compressor is operating, the check

valve is "open", allowing compressed

air to enter the air tank. When the air

compressor reaches "cut-out"

pressure, the check valve "closes",

allowing air pressure to remain inside

the air tank.

Pressure Release Valve: The

pressure release valve located on the

side of the pressure switch, is

designed to automatically release

compressed air from the compressor

head and the outlet tube when the air

compressor reaches "cut-out"

pressure or is shut off. The pressure

release valve allows the motor to

restart freely. When the motor stops

running, air will be heard escaping

from this valve for a few seconds. No

air should be heard leaking when the

motor is running, or continuous

leaking after unit reaches "cut-out"

pressure.

Pressure

Release

Valve

How to Use Your Unit

How to Stop:

1. Set the On/Auto/Off lever to

"OFF".

Before Starting

Break-in instructions

_Risk of Unsafe

Operation. Serious

damage may result if the following

break-in instructions are not

closely followed,

This procedure is required before the

air compressor is put into service and

when the check valve or a complete

compressor pump has been

replaced.

1. Make sure the On/Auto/Off lever

is in the "OFF" position.

NOTE: If quick connect is installed,

pull coupler back until it clicks to

prevent air from escaping through the

quick connect.

2. Plug the power cord into the

correct branch circuit receptacle.

(Refer to Voltage and Circuit

Protection paragraph in the

Installation section of this

manual.)

3. Open the drain valve fully

(counter-clockwise) to permit air

to escape and prevent air

pressure build up in the air tank

during the break-in period.

4. Move the On/Auto/Off lever to

"ON/AUTO" position. The

compressor will start.

13_ ENG D30050

5. Run the compressor for 15

minutes. Make sure the drain

valve is open and there is

minimal air pressure build-up in

tank.

6. After 15 minutes, close the drain

valve (clockwise). The air receiver

will fill to "cut-out" pressure and

the motor will stop.

The compressor is now ready for use.

Before Each Start-Up:

1. Place On/Auto/Off lever to

"OFF".

2. Pull regulator knob out, turn

counter-clockwise until it stops.

Push knob in to lock in place.

3. Attach hose and accessories.

NOTE: The hose or accessory

will require a quick connect plug

if the air outlet is equipped with a

quick connect.

Risk of Bursting. Too

much air pressure

causes a hazardous risk of bursting.

Check the manufacturer's maximum

pressure rating for air tools and

accessories. The regulator outlet

pressure must never exceed the

maximum pressure rating.

How to Start:

1. Turn the On/Auto/Off lever to

"AUTO" and allow tank pressure

to build. Motor will stop when

tank pressure reaches "cut-out"

pressure.

2. Pull the regulator knob out and

turn clockwise to increase

pressure. When the desired

pressure is reached push knob in

to lock in place.

The compressor is ready for use.

D30050 14_ ENG

Customer Responsibilities

Check Safety Valve

Drain Tank

Air Filter

Air compressor pump intake

and exhaust valves

Before Daily ol

_aoh e_er

each

_se use

F_quently

• (1)

1- more frequent in dusty or humid conditions

Yearly

Risk of Unsafe

Operation. Unit

cycles automatically when power is

on. When servicing, you may be

exposed to voltage sources,

compressed air, or moving parts.

Before servicing unit unplug or

disconnect electrical supply to the

air compressor, bleed tank of

pressure, and allow the air

compressor to cool.

To ensure efficient operation and

longer life of the air compressor unit,

a routine maintenance schedule

should be prepared and followed.

The following routine maintenance

schedule is geared to an unit in a

normal working environment

operating on a daily basis. If

necessary, the schedule should be

modified to suit the conditions under

which your compressor is used. The

modifications will depend upon the

hours of operation and the working

environment. Compressor units in an

extremely dirty and/or hostile

environment will require a greater

frequency of all maintenance checks.

To Check Safety Valve

Risk of Bursting. If

the safety valve

does not work properly, over-

pressurization may occur, causing

air tank rupture or an explosion.

1. Before starting compressor, pull

the ring on the safety valve to

make sure that the safety valve

operates freely. If the valve is

stuck or does not operate

smoothly, it must be replaced

with the same type of valve.

To Drain Tank

1. Set the On/Auto/Off lever to

"OFF" and unplug unit..

2. Pull the regulator knob out and

turn counterclockwise to set the

outlet pressure to zero.

3. Remove the air tool or accessory.

4. Pull ring on safety valve allowing

air to bleed from the tank until

tank pressure is approximately

20 psi. Release safety valve ring.

5. Drain water from air tank by

opening drain valve (counter-

clockwise) on bottom of tank.

I_ Risk of Bursting.

Water will

condense in the air tank. If not

drained, water will corrode and

weaken the air tank causing a risk

of air tank rupture.

15_ ENG D30050

6. After the water has been drained,

close the drain valve (clockwise).

The air compressor can now be

stored.

NOTE: If drain valve is plugged,

release all air pressure. The valve

can then be removed, cleaned, the

reinstalled.

Air Filter - Inspection and

Replacement

Risk of Burns.

Compressor head

and cylinder sleeve are very hot.

Do not touch. Allow compressor to

cool prior to servicing.

Risk of Unsafe

Operation. Keep

the air filter clean at all times. Do

not operate the air compressor

with the air filter removed.

A dirty air filter will not allow the

compressor pump to operate at full

capacity. Before you use the

compressor pump, check the air filter

to be sure it is clean and in place.

If it is dirty, replace it with a new filter.

On some models,the filter may be

removed by using a pair of needle

nose pliers or a screwdriver. Pull or

pry out the old filter and carefully

clean the filter area. Push in the new

air filter.

Air Compressor Pump Intake

and Exhaust Valves

Once a year have a Trained Service

Technician check the air compressor

pump intake and exhaust valves.

MoOr

The motor has an automatic reset

thermal overload protector. If the

motor overheats for any reason, the

overload protector will shut off the

motor. The motor must be allowed to

cool down before restarting. The

compressor will automatically restart

after the motor cools.

if the overload protector shuts the

motor off frequently, check for a

possible voltage problem. Low

voltage can also be suspected when:

1. The motor does not get up to full

power or speed.

2. Fuses blow out when starting

the motor; lights dim and remain

dim when motor is started and is

running.

D30050 16_ ENG

ALL MAINTENANCE AND REPAIR

OPERATIONS NOT LISTED MUST

BE PERFORMED BY TRAINED

SERVICE TECHNICIAN.

IIR_'_II Risk of Unsafe

Operation. Unit

cycles automatically when power is

on. When servicing, you may be

exposed to voltage sources,

compressed air, or moving parts.

Before servicing unit unplug or

disconnect electrical supply to the

air compressor, bleed tank of

pressure, and allow the air

compressor to cool.

To Replace or Clean Check

Valve

1. Release all air pressure from air

tank. See "To Drain Tank" in the

Maintenance section.

2. Set the On/Auto/Off lever to

"OFF" and unplug unit.

3. Using an adjustable wrench

loosen outlet tube nut at air tank

and pump. Carefully move outlet

tube away from check valve.

4. Using an adjustable wrench

loosen pressure relief tube nut at

air tank and pressure switch.

Carefully move pressure relief

tube away from check valve.

5. Unscrew the check valve (turn

counterclockwise) using a 7/8"

open end wrench. Note the

orientation for reassembly.

6. Using a screwdriver, carefully

push the valve disc up and

down. NOTE: The valve disc

should move freely up and down

on a spring which holds the valve

disc in the closed position, if not

the check valve needs to be

cleaned or replaced.

open

position

nothing is

visible,

tn closed position

disc is visible.

7. Clean or replace the check valve.

A solvent, such as paint or

varnish remover can be used to

clean the check valve.

8. Apply sealant to the check valve

threads. Reinstall the check valve

(turn clockwise).

9. Replace the pressure release

tube. Tighten nuts.

10. Replace the outlet tube and

tighten nuts.

11. Perform the Break-in Procedure.

See "Break-in Procedure" in the

Operation section.

17_ ENG D30050

Before you store the air compressor,

make sure you do the following:

1.

Review the "Maintenance"

section on the preceding pages

and pe_orm scheduled

maintenance as necessary.

2. Set the On/Auto/Off lever to

"OFF" and unplug unit.

3. Turn the regulator

counterclockwise and set the

outlet pressure to zero.

4. Remove the air tool or accessory.

5.

Pull ring on safety valve allowing

air to bleed from the tank until

tank pressure is approximately

20 psi. Release safety valve ring.

6. Drain water from air tank by

opening drain valve on bottom

of tank.

I_ Risk of Bursting.

Water will

condense in the air tank. If not

drained, water will corrode and

weaken the air tank causing a risk

of air tank rupture.

7. After the water has been drained,

close the drain or drain valve.

NOTE: If drain valve is plugged,

release all air pressure. The valve

can then be removed, cleaned, then

reinstalled.

8.

g.

Protect the electrical cord and air

hose from damage (such as

being stepped on or run over).

Wind them loosely around the

compressor handle.

Store the air compressor in a

clean and dry location.

D30050 18_ ENG

h| -'Toll:J_oXo_

V_II Risk of Unsafe Operation. Unit cycles automatically when

power is on. When servicing, you may be exposed to

voltage sources, compressed air, or moving parts. Before servicing unit

unplug or disconnect electrical supply to the air compressor, bleed tank

of pressure, and allow the air compressor to cool.

CAUSE CORRECTION

PROBLEM

Excessive tank

pressure -

safety valve

pops off.

Air leaks at

fittings.

Air leaks at or

inside check

valve.

Air leaks at

pressure switch

release valve.

(if equipped)

Air leaks in air

tank or at air

tank welds.

Air leaks

between head

and valve plate.

Pressure switch does not

shut off motor when

compressor reaches "cut-

out" pressure.

Pressure switch "cut-out"

too high.

Tube fittings are not tight

enough.

Check valve seat damaged.

Defective pressure switch

release valve.

Defective air tank.

Leaking seal.

Move On/Auto/Off lever to

the "OFF" position, if the

unit does

not shut off contact a

Trained Service Technician.

Contact a Trained Service

Technician.

Tighten fittings where air can

be heard escaping. Check

fittings with soapy water

solution. DO NOT

OVERTIGHTEN.

A defective check valve

results in a constant air leak

at the pressure release valve

when there is pressure in the

tank and the compressor is

shut off. Replace check

valve. Refer the "To Replace

or Clean Check Valve" in the

"Service and Adjustment"

section.

Contact a Trained Service

Technician.

Air tank must be replaced.

Do not repair the leak.

Risk of

Bursting

Do not drill into, weld or

otherwise modify air tank

or it will weaken. The tank

can rupture or explode.

Contact a Trained Service

Technician.

19_ ENG D30050

PROBLEM CORRECTION

Pressure reading

on the regulated

pressure gauge

(if equipped)

drops when an

accessory is

used.

CAUSE

It is normal for "some"

pressure drop to occur.

If there is an excessive amount

of pressure drop when the

accessory is used, adjust the

regulator as instructed in the

Operation section.

NOTE: Adjust the regulated

pressure under flow conditions

(while accessory is being

used).

Air leak from Possible defect in safety Operate safety valve manually

safety valve, valve, by pulling on ring. If valve still

leaks, it should be replaced.

Decrease amount of air usage.

Prolonged excessive use of

air.

Compressor is not large

enough for air requirement.

Hole in hose.

Check valve restricted.

Air leaks.

Restricted air intake filter

Compressor is

not supplying

enough air to

operate

accessories.

Check the accessory air

requirement. If it is higher than

the SCFM or pressure supplied

by your air compressor, you

need a larger compressor.

Check and replace if required.

Remove and clean, or replace.

Tighten fittings.

Clean or replace air intake

filter. Do not operate the air

compressor with the filter

removed. Refer to the "Air

Filter" paragraph in the

"Maintenance " section.

Restricted air Dirty air filter. Clean or replace. See Air Filter

intake, paragraph in the Maintenance

section.

Regulator knob Damaged regulator. Have checked by a Trained

has continuous Service Technician.

air leak.

Regulator will Damaged regulator. Have checked by a Trained

not shut off air Service Technician.

outlet.

D30050 20_ ENG

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Craftsman 919.167462 Owner's manual

Craftsman 919.167462 Owner's manual

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